Java 11 migrate remaining e (#1112)

* Moves eip-aggregator to Java 11

* Moves eip-message-channel to Java 11

* Moves eip-publish-subscribe to Java 11

* Moves eip-splitter to Java 11

* Moves eip-wire-tap to Java 11

* Moves event-aggregator to Java 11

* Moves event-asynchronous to Java 11

* Moves event-driven-architecture to Java 11

* Moves event-queue to Java 11

* Moves event-sourcing to Java 11

* Moves execute-around to Java 11

* Moves extension-objects to Java 11

execute-around/src/main/java/com/iluwatar/execute/around/SimpleFileWriter.java

@@ -36,7 +36,7 @@ public class SimpleFileWriter {
    * Constructor.
    */
   public SimpleFileWriter(String filename, FileWriterAction action) throws IOException {
-    try (FileWriter writer = new FileWriter(filename)) {
+    try (var writer = new FileWriter(filename)) {
       action.writeFile(writer);
     }
   }